[PATCH v2] Add math-inline benchmark
Carlos O'Donell
carlos@redhat.com
Fri Jul 17 13:48:00 GMT 2015
On 07/17/2015 09:26 AM, Wilco Dijkstra wrote:
> It shouldn't be necessary to use assembly code, GCC is perfectly capable of
> generating efficient code for EXTRACT_WORDS. If GCC doesn't for x64 then you
> should report it and ensure it gets fixed. I don't understand why people keep
> using target-specific hacks and assembly rather than fixing the underlying
> issues and use generic code that works well on all targets...
Agreed. The compiler can't schedule the assembly at all, and worse.
>> So at least on x64 we should publish math_private inlines instead using
>> slow builtins.
>
> Well it was agreed we are going to use the GCC built-ins and then improve
> those. If you want to propose additional patches with special inlines for
> x64 then please go ahead, but my plan is to improve the builtins.
Agreed.
Cheers,
Carlos.
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